豫南稻区再生稻气候适宜性分析与实践

Analysis and Practice of Climate Suitability of Ratoon Rice in South Area of Henan

为探索豫南稻区发展再生稻的可行性,以1980年以来的气象资料为依据,对影响再生稻较大的气候因子,如9月平均温度、≥10℃积温、8月降水量、年降水量、9月光照时数等进行了比较研究,并于2010、2011年进行了再生稻试验实践。结果表明:豫南稻区的水、热资源可以达到再生稻最适宜区标准,光照资源达到再生稻次适宜区标准。

In order to explore the developing feasibility of ratoon rice in south area of Henan, the climatic factors with greater influences, such as the average temperature in September, I〉 10~C accumulated temperature, precipitation in August, annual precipitation and sunshine duration in September, were analyzed based on the meteorological data since 1980. The field test was conducted in 2010 and 2011. The resuhs showed that the water and thermal resources could reach the most suitable region standard, and the sunshine resources reach the secondary suitable area standard.